﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
   public class Calculate
    {

        //加法
        public double Add(double a, double b)
        { 
            return a+b;
        }
        public double Minusdd(double a, double b)
        {
            return a - b;
        }
        public double Multiply(double a, double b)
        {
            return a * b;
        }
        public double Divide(double a,double b) 
        {
            return a / b;
        }
    }
}
